Difference between revisions of "Phosphorus pentabromide"
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| Section2 = {{Chembox Properties | | Section2 = {{Chembox Properties | ||
| − | | Reference = <ref name="Kirk-Othmer">{{Kirk-Othmer | first1 = S. D. | last1 = Ukeles | first2 = M. | last2 = Freiberg | contribution = Bromine, Inorganic Compounds | doi = 10.1002/0471238961.021815131001031 | year = 2002}}.</ref><ref name="Struct">{{citation | first1 = W. Gabes | + | | Reference = <ref name="Kirk-Othmer">{{Kirk-Othmer | first1 = S. D. | last1 = Ukeles | first2 = M. | last2 = Freiberg | contribution = Bromine, Inorganic Compounds | doi = 10.1002/0471238961.021815131001031 | year = 2002}}.</ref><ref name="Struct">{{citation | first1 = W. | last1 = Gabes | first2 = K. | last2 = Olie | title = Refinement of the crystal structure of phosphorus pentabromide, PBr<sub>5</sub> | journal = Acta Crystallogr., Sect. B: Struct. Crystallogr. Cryst. Chem. | year = 1970 | volume = 26 | pages = 443–44 | doi = 10.1107/S0567740870002595}}.</ref> |
| Formula = PBr<sub>5</sub> | | Formula = PBr<sub>5</sub> | ||
| MolarMass = 430.49 g mol<sup>−1</sup> | | MolarMass = 430.49 g mol<sup>−1</sup> | ||
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| OtherAnions = [[Phosphorus pentafluoride]]<br />[[Phosphorus pentachloride]]<br/>[[Phosphorus pentaiodide]] | | OtherAnions = [[Phosphorus pentafluoride]]<br />[[Phosphorus pentachloride]]<br/>[[Phosphorus pentaiodide]] | ||
| OtherCations = [[Arsenic pentabromide]]<br/>[[Antimony pentabromide]]<br/>[[Bismuth pentabromide]] | | OtherCations = [[Arsenic pentabromide]]<br/>[[Antimony pentabromide]]<br/>[[Bismuth pentabromide]] | ||
| + | | OtherCpds = [[Phosphorus tribromide]] | ||
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| LattConst_b = 1703.1(5) pm | | LattConst_b = 1703.1(5) pm | ||
| LattConst_c = 824.7(5) pm | | LattConst_c = 824.7(5) pm | ||
| − | | Coordination = ''T<sub>d</sub>'' | + | | Coordination = tetrahedral (P) |
| − | + | | MolShape = ''T<sub>d</sub>'': ''r''(P–Br) = 215 pm | |
}} | }} | ||
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Latest revision as of 14:50, 7 January 2011
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Phosphorus pentabromide, PBr5, is the highest bromide of phosphorus. The PBr5 molecule is unknown: the compound exists as PBr+4Br− in the solid state, and dissociates to phosphorus tribromide and bromine in the gas phase.[4][5] It is used as a brominating agent, converting carboxylic acids to acyl bromides[1] and phenols and secondary alcohols to the corresponding bromides.[6][7]
Notes and references
Notes
References
- ↑ 1.0 1.1 Ukeles, S. D.; Freiberg, M. Bromine, Inorganic Compounds. In Kirk-Othmer Encyclopedia of Chemical Technology; John Wiley: New York, 2002. DOI: 10.1002/0471238961.021815131001031.
- ↑ 2.0 2.1 Gabes, W.; Olie, K. Refinement of the crystal structure of phosphorus pentabromide, PBr5. Acta Crystallogr., Sect. B: Struct. Crystallogr. Cryst. Chem. 1970, 26, 443–44. DOI: 10.1107/S0567740870002595.
- ↑ HSNO Chemical Classification Information Database, <http://www.ermanz.govt.nz/Chemicals/ChemicalDisplay.aspx?SubstanceID=14517> (accessed 7 January 2011), New Zealand Environmental Risk Management Authority.
- ↑ Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; pp 571–75. ISBN 0-08-022057-6.
- ↑ Finch, Arthur; Gates, Peter N.; Muir, Alan S. Variable-temperature Raman spectra of phosphorus(V) chloride and bromide deposited at 15 K. J. Chem. Soc., Chem. Commun. 1981, 812–14. DOI: 10.1039/C39810000812.
- ↑ Kaslow, C. E.; Marsh, Max M. Substituted Bromoquinolines. J. Org. Chem. 1947, 12 (3), 456–59. DOI: 10.1021/jo01167a014.
- ↑ Eliel, Ernest L.; Haber, Ralph G. Conformational Analysis. V. The Reaction of cis- and trans-4-t-Butylcyclohexanol and trans-4-Methylcyclohexanol with Phosphorus Pentabromide. Syntheses of Alkylcyclohexyl Bromides. J. Org. Chem. 1959, 24 (2), 143–51. DOI: 10.1021/jo01084a001.
External links
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